Universal drill jig



C. H. WOOLSON UNIVERSAL DRILL JIG Nov. 9, 1948.

Filed Sept. 14, 1946 2 Sheets-Sheet l Ill:

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UNIVERSAL DRILL JIG Filed sept. i4, 194e 2 Sheets-sheet 2 ILE- L Patented Nov. 9, 1948 UNITED N STATES PATENT OFFICE DRILL JIG Charles H. Woolson, Syracuse, N. Y.

` Application September 14, 1946, Serial `1 claim.` (ci. 'n sz) jigs, as for mass or large This universal fixture is The invention consists in the `novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is Jig. i

Figure 2 is a side elevation, partly broken away and partly in section. i

Figure 3 is an end elevation looking tothe left in Figure 2.

`Figures 4 and 5 are end elevations, on a re` duced scale, similar to Figure 3, showing the adn justment of the work holding block for receiving round articles and rectangular articles` respec-` tively of various sizes and also showing the carriageas adjusted for holding larger articles than by the adjustment shown in Figure 3.

Figure 6 is an elevation on a reducedscale work where it is impracor adjustable to hold difis `quickly adjustable for` a plan view of this universal drill lll of the jig where the work-piece is mounted on an indexible work holder.

Figure 7 is a sectional of line 'l-'L Figure 6.

This universal drill jig includes generally a base, a drill guide carriage and a reversiblework holder block, the block having ways slidably intertting with ways ofthe base and of the carriage and reversible to interlock the ways intertting with the base with the ways intertting with the carriage, and vice-versa, and the block view taken onthe plane having work receiving grooves or channels of different contour on opposite sides thereof arranged to beselectively brought into position opposed to the carriage upon reversing of the block. The jig also includes a work holder on which `the work is mountable, which work holder is held between the block and the carriage and indexible about an axis to index the work to locate radial holes'to be drilled in the work.

l designates the base; 2 the carriage, and 3 the reversible work holding block between the base andthe carriage 2. The base is formed with a channel 4 in its upper face, the side walls `I in the ways 5 thereof to different of which are provided square, ways 5. The `carriage 2 is formed with `a recess or channelli extending lengthwise thereci', the side walls of which are formed "with Ways of the samesize and congurationas the ways 5. There are a pluralityof `such sets of ways'l and 8 located to hold the carriage at different elevations for work of diiierent sizes; The block '3 isformed at its opposite or upper and lower sides with sets of complemental external ways `9, I 0, the block 3 being reversibletobring `the Ways 9 into either sets of ways 'l or` 8 of the carriage, and the ways l of the blockinto the ways of the basel The block 3 is provided with grooves or Work receiving channels `Il and l2 of dilierent crosssection, here shown as V-shaped and square respectively located in the opposite faces of the block, that is, in theupper and lower faces between `the ways I 0 and the ways 5. Also, an adjustable abutment I3 is mountable on "the base positions along the same. The `V-shaped grooves Il are for the purpose of holding round pieces of work or a round index membercarryingthe work, as

will be presently describedyandthe' square re-` cesses are for receiving assquare piece of work and` also adapters, as I4 (Figure 5) zitting in the channels l2 for holding square or rectangular pieces of smaller size, or in other words, for reducing vthe size of the work receiving `channel or groove, The block 3 is `assembled on the base in different positions bysliding it endwise into the channel 4 with the ways 9 or l@ `of the block interntting the ways V5 of the base. When the `w21-Ys 9 Aofthe block are intertted with the ways `5` of the basethe Ways l0 of the block may `be interfitted with the ways l or the Ways il of the carriage 2. i For a piece of small diameter, the

ways 9 or lll are tted into the ways l of the carriage 2, as` seen in Figure 3. When a workpiece of largerldiameter is to beoperated upon,

theways Hl of the blo-ck are intertted inthe ways 8 of the carriage 2, as seen in Figures 4 and 5. The carriage 2 is provided with a vertically-movable sub-carriage l5 overhanging one end of the carriage 2 and connected thereto by dove-tail ways at I6, the carriage l5 being held in different adjusted positions toward and from the block 3 by means of set screw l1. This subcarriage is also reversible from the position shown in Figures 1 to 5 inclusive to the position shown in Figure 6. carriage I 5 is L shaped and in the position illustrated in Figures 1 to 5 inclusive, is shown as arranged with the L `formation in upright position, while in Figure 6, as in inverted position. The sub-carriage l5 is shown as provided with openings I8 through which the drills are guided. The openings may be provided with drill with aiset of undercut, as

In other words, the sub-` i `the carriage 2 is also formed 2,453,482 i. Si

bushings I3 of different sizes. The main body of with openings 20 and drill bushings or liners 2I therein, and these openings may be for guiding drills butlare also for receiving an adjustable indexing. device 22 operable to adjust and hold the work in different radial positions relative to the drill. The indexf ing device includes a spring-pressed pin 23 l0- cated in a body 24 20 or the bushing therein, the pin having its end fitted in any one of theholesr f 25 arranged to enter any one of a series of holes in an index bar Yor member,l as 26, .which is clamped, preferably rotatably, between the carriage Z and the block 3, as by clamping screws-'211 The work-piece itselfl is, in some operations, as in Figure 2, clamped by these screws-21, that is, when no indexing operation is to be performed. In Figure 6, the work designated W is shown as a collar mounted or threaded on the end of the index member 26', and when a hole is drilled by the drill D, in the periphery of the work W, and the drill withdrawn, the index plunger is withdrawn by means of its knurled end 28 against its spring and the index bar 26 turned untilan other hole comes into alinement with the plunger 25 and then the plunger'released and the second dri-lling occurs. Some collars or pieces of work may require two diametrically opposite index holes, others a different number, as four, six, etc. equally-spaced holes. Hence, this index member or bar 2 may be provided with different series of holes, each series having a, different number of holes along the same and the index member 22may be located in any one of the holes 20 to register with a particular series of holes in the index member.

The holes for guiding the' drill are arranged radially relatively-to the axis of the work-piece clamped between the block 3 and the carriage 2, so that the holes to be drilled are radial holes. The block 3 is held in its adjusted position along the ways of the base I by suitable means, asset screws 30; the carriage Z held in its adjusted position relatively to the block 3 by set screws 3I, the sub-carriage I is held snugly in its ways by a set screw -32 in conjunction with the set screw II which holds thev sub-carriage at dilerent elevations. The adapter I4 is held tightly in the groove I2 by a 'set vscrew 33. "Ihe carriage 2 is provided with when desired, to a bracket, fixture orV other part.

In operation, the block 3 is mounted in the hase with the work clamped by the 'screws 21 or one of them and in such position to Alocate the hole or holes to be drilled relatively to the bracket guide holes I3. Whenso located, the work abuts against the stop I3. When-an indexing operatapped holes 34 for securing it,

` riage 2 andtheblock 3.;

tion is to be performed, the work (Figure 6) abuts against the end of the member 26 to locate the holes to be drilled,'the member 26 then having been adjusted and clalppedgbetwen the car- "Owing to the reversing of ierent shaped grooves for round or square pieces and adjusting of the block to different'elevations,

the jig' is adaptable for use on stock of different diameters and shapes, as round, square or recft'angular, andthe drill guide carriage may be `adjusted-seas to locate the drills relatively to the work. Also, owing to the indexing device, -th"e"wo`rk may be provided with radial holes spaced equidistant apart and different distances apart fordiiierent work-pieces. f

The term -drill jig is used for brevitys sake. It is equally useful for tapping and other operations.

yWhat I claim is:

A universal drill jig including av base, Va carriage, drill guide openings, the block being adjustable lineally along the ways oi the base,` and the carriage adjustable lineally along the Iways of the block to locate drill openings relative to the work between the carriage andthe block, a reversible work holder block between the base and the carriage and having Ways 'slidably interiitting'with ways oi the base and of the carriage and reversible to interlock the ways intertting with the base with the Ways interfitting with the carriage and viceeversa, the block having Work receiving channels of dierent contour .on opposite ysides thereof arranged 'to be alternately brought into position opposed to the` carriage upon reversing of the block, the carriage having a plurality of duplicate ways for coacting with `the ways oi the block and arranged to space the block dilerent distances from the carriage, whereby work oi different diameters are clamped between the opposing facesof the block andthe carriage in juxtaposition to the drill guiderop'en- 1n s. l f g CHARLES I-I. lWOOLSON.

, REFERENCES CITED Jesionowski Aug; 22,1944

the block having dif- 

